CN103001165B - Same-tower dual-loop single-line transposition tower - Google Patents
Same-tower dual-loop single-line transposition tower Download PDFInfo
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- CN103001165B CN103001165B CN201210576497.2A CN201210576497A CN103001165B CN 103001165 B CN103001165 B CN 103001165B CN 201210576497 A CN201210576497 A CN 201210576497A CN 103001165 B CN103001165 B CN 103001165B
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Abstract
The invention discloses a kind of same-tower dual-loop single-line transposition tower for power system transmission line, be especially applicable to transposition in High aititude, ultra-high-tension power transmission line and use.A kind of wire cross-arm length that can not increase on common-tower double-return road provided by the present invention just can realize replacing and overhaul the lower transposition tower of risk, comprise tower body, upper at tower body, bottom on front side of power transmission line direction or the wherein side of rear side upper conductor cross-arm is installed, lower wire cross-arm, upper and lower wire jumper is connected with between upper conductor cross-arm and lower wire cross-arm, the leading portion of the 3rd power transmission line is connected on cross-arm, and on the 3rd, conjugate wire jumper be connected with upper and lower wire jumper, the back segment of the 3rd power transmission line is connected on lower cross-arm, and be connected with upper and lower wire jumper through the 3rd time displacement wire jumper.Adopt same-tower dual-loop single-line transposition tower of the present invention, saved material and manufacturing cost, alleviate the weight of tower body, be conducive to transport and the installation in ungetable area.
Description
Technical field
The present invention relates to a kind of common-tower double-return road tower for power system transmission line, be especially applicable to transposition in High aititude, ultra-high-tension power transmission line and use.
Background technology
The effect of Conductor transposition is to reduce unsymmetrical current and unbalance voltage when electric power system normally runs, and in the power network of neutral-point solid ground, length all should replace more than the transmission line of 100km.Transposition cycle length should not be greater than 200km.
The transposition form of current long distance transmission line generally has multiple, mainly contain, the first is by two single loop construction, and long transmission line transposition is generally carried out at each single loop, this technology is comparatively ripe, and investment comparatively economizes, but require higher to line corridor, be suitable for that landform is smooth, the application of the area of easy construction.It two is that the strain tower that adopts in 500 kilovolts of multiple-circuit on same tower is outer around jumping transposition form, and namely under needs ensure corresponding electric clearance required distance, upper, middle and lower wire cross arm end installs wire jumper cross-arm additional to carry out the transposition between upper and lower wire.
And along with high pressure, the application of extra high voltage network and the increase of high altitude localities power transmission engineering, in order to reduce high altitude localities line corridor cleaning, construction cost, employing two single loop construction are not suitable for, need to adopt same tower double back transmission line, and it is outer around jumping transposition form according to existing strain tower, due to rarefaction of air, electric clearance required distance is larger, the comparatively long lead cross-arm that will install additional on transposition tower, ensure the safe distance between upper and lower cross-arm, thus add load and the tower material consumption of steel tower, also cost of transportation and construction cost is added with regard to corresponding, this pole is not suitable for the application in traffic and transport inconvenience area.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of wire cross-arm length that can not increase on common-tower double-return road and just can realizes replacing and overhaul the lower transposition tower of risk.
The present invention solves the same-tower dual-loop single-line transposition tower that its technical problem adopts, comprise tower body, tower body left and right side is all provided with the upper cross-arm vertical with power transmission line direction, middle cross-arm and lower cross-arm, and cross-arm, middle cross-arm and lower cross-arm both sides are connected to the first loop and second servo loop transmission line on described; First loop comprises the first power transmission line, the second power transmission line and the 3rd power transmission line, and second servo loop comprises the first power transmission line, the second power transmission line and the 3rd power transmission line; In the upper and lower part of tower body on front side of power transmission line direction or the wherein side of rear side upper conductor cross-arm, lower wire cross-arm are installed, between described upper conductor cross-arm and lower wire cross-arm, be connected with upper and lower wire jumper; The leading portion of the first power transmission line is connected on middle cross-arm, and is connected with the back segment be connected on upper cross-arm through the first displacement wire jumper; The leading portion of the second power transmission line is connected on lower cross-arm, and is connected with the back segment be connected on middle cross-arm through the second displacement wire jumper; The leading portion of the 3rd power transmission line is connected on cross-arm, and on the 3rd, conjugates wire jumper be connected with upper and lower wire jumper; The back segment of the 3rd power transmission line is connected on lower cross-arm, and is connected with upper and lower wire jumper through the 3rd time displacement wire jumper.
Described tower body is angle tower, and upper conductor cross-arm and lower wire cross-arm are arranged on the front side of angle tower, and described first loop is connected to the inner side of angle tower.
Described 3rd time displacement wire jumper is arranged on lower cross-arm side end by insulator string.
Insulator string is all adopted to be connected at above-mentioned all power transmission lines, wire jumper with the junction of the cross-arm on tower body.
Adopt same-tower dual-loop single-line transposition tower of the present invention, outer around jumping compared with transposition tower with existing strain tower, wire jumper cross-arm lateral length on its tower body decreases, material and manufacturing cost are saved, alleviate the weight of tower body, be conducive to transport and the installation in ungetable area, wiring is simple, be conducive to installation and operation maintenance, upper and lower wire jumper is only arranged on the wherein side of side before and after tower body, the one-sided transposition of such formation, reduces danger coefficient during inspection and maintenance, has stronger promotional value.
Accompanying drawing explanation
Fig. 1 is the structural representation of single line transposition tower of the present invention;
Fig. 2 is the schematic top plan view of the 3rd power transmission line redirect transposition;
Fig. 3 is the schematic top plan view of the 3rd power transmission line redirect transposition of angle tower.
Shown in figure: A-first power transmission line, B-second power transmission line, C-the 3rd power transmission line, 1-tower body, 11-angle tower, the upper cross-arm of 21-, cross-arm in 22-, cross-arm under 23-, 3-insulator string, 31-upper conductor cross-arm, 32-lower wire cross-arm, the upper and lower wire jumper of 41-, 51-first conjugates wire jumper, 52-second conjugates wire jumper, and 53-the 3rd conjugates wire jumper, 54-the 3rd time displacement wire jumper, inside 61-, outside 62-, 7-axis.
Embodiment
Same-tower dual-loop single-line transposition tower of the present invention, comprise tower body 1, left at tower body 1, right side is all provided with the upper cross-arm 21 vertical with power transmission line direction, middle cross-arm 22 and lower cross-arm 23, cross-arm 21 on described, middle cross-arm 22 and lower cross-arm 23 homonymy are connected to same loop transmission line: with loop transmission line by the first power transmission line A, second power transmission line B and the 3rd power transmission line C forms, upper at tower body 1, bottom on front side of power transmission line direction or the wherein side of rear side upper conductor cross-arm 31 and lower wire cross-arm 32 are installed, upper and lower wire jumper 41 is connected with between described upper conductor cross-arm 31 and lower wire cross-arm 32.
As shown in Figure 1, two double circuit lines comprise, the first loop be made up of power transmission line A1, B1, C1, the second servo loop be made up of power transmission line A2, B2, C2.
Embodiment one:
Below in conjunction with Fig. 1 and Fig. 2, be described with the connection of the transposition structure in the first loop to invention.
The leading portion of the first power transmission line A1 is connected on the front side of middle cross-arm 22, and is connected with the back segment of the first power transmission line A1 be connected on rear side of upper cross-arm 21 through the first displacement wire jumper 51, the transposition of the middle phase so just achieving the first power transmission line A1 upwards phase.
The leading portion of the second power transmission line B1 is connected on the front side of lower cross-arm 23, and is connected with the back segment of the second power transmission line B1 be connected on rear side of middle cross-arm 22 through the second displacement wire jumper 52, the transposition of middle in opposite directions phase under so just achieving the second power transmission line B1.
The leading portion of the 3rd power transmission line C1 is connected on the front side of cross-arm 21, and is connected with the wire jumper up and down 41 be arranged on front side of tower body 1 by conjugating wire jumper 53 on the 3rd; The back segment of the 3rd power transmission line C1 is connected on rear side of lower cross-arm 23, and is connected with about the same wire jumper 41 be arranged on front side of tower body 1 by the 3rd time displacement wire jumper 54, so just achieves the transposition of the upper downward phase mutually of the 3rd power transmission line C1.As shown in Figure 2, the installation site of upper conductor cross-arm 31 on tower body 1 higher than on cross-arm 21, the installation site of lower wire cross-arm 32 on tower body 1 is lower than lower cross-arm 23, and the 3rd power transmission line C1 needs to carry out redirect transposition by upper and lower wire jumper 41, conjugate on leading portion and upper and lower wire jumper 41 that wire jumper 53 is connected directly between the 3rd power transmission line C1 on 3rd, 3rd time the back segment of upper and lower wire jumper 41 and the 3rd power transmission line C1 will couple together by displacement wire jumper 54, and the back segment of the 3rd power transmission line C1 and upper and lower wire jumper 41 be not in the same side, front and back of tower body 1, as adopted straight line connected mode, 3rd time displacement wire jumper 54 may be closer with the distance of tower body 1 in connection procedure, do not meet safety standard, therefore the 3rd time displacement wire jumper 54 is also arranged on lower cross-arm 23 side end by insulator string 3, so just can ensure the safe spacing between the 3rd time displacement wire jumper 54 and tower body 1.
In above-mentioned transposition structure, because upper and lower wire jumper 41 is only arranged on the side of tower body 1, therefore the corresponding opposite side at tower body 1 carries out the transposition of power transmission line with regard to not installing lower wire jumper 41, decrease the charged of tower body 1, decrease potential safety hazard when tower body 1 or power transmission line maintenance, ensure that the safety of personnel.
For the transposition of second servo loop, only need to arrange the transposition that the transposition structure identical with the first loop just can realize power transmission line A2, B2, C2 on next transposition tower, thus realize two circuit transposition.
Embodiment two:
On the basis of embodiment one, in order to improve the safe distance between the 3rd time displacement wire jumper 54 and tower body 1, the angle tower 11 in transmission line is designed to transposition tower better.As shown in Figure 3, because transmission line is after angle tower 11, on front side of it and the power transmission line shape of rear side have a certain degree, simultaneously on angle tower 11 according to the trend of power transmission line, define inner side 61 and outside 62.
Wherein the direction of power transmission line leading portion is vertical with the upper cross-arm 21 on angle tower 11, upper cross-arm 21 on the direction of power transmission line back segment and angle tower 11 forms angle, wherein the first power transmission line A1, the second power transmission line B1 in the first loop, the 3rd power transmission line C1 are arranged on the inner side 61 of angle tower 11, first power transmission line A2 of second servo loop, the second power transmission line B2, the 3rd power transmission line C2 are arranged on the outside 62 of angle tower 11, and therefore the power transmission line of second servo loop needs the axis 7 by angle tower 11.
Upper conductor cross-arm 31 and lower wire cross-arm 32 are arranged on the front side of the angle tower 11 being connected power transmission line leading portion, identical with the structure of embodiment one like this, avoid being arranged on rear side and by between the second servo loop power transmission line in outside 62 due to the less potential safety hazard caused of distance.Simultaneously the leading portion of the 3rd power transmission line C1 in the first loop and back segment are by the wire jumper up and down 41 between upper conductor cross-arm 31 and lower wire cross-arm 32 and the 3rd conjugate wire jumper 53, and the 3rd time displacement wire jumper 54 realizes transposition.Due to the 3rd time, displacement wire jumper 54 is connected by inner side 61, and the safe distance therefore between the 3rd time displacement wire jumper 54 and angle tower 11 is more easily guaranteed.
The first power transmission line A in the above two embodiments, the second power transmission line B, the 3rd power transmission line C are only the signs done to clearly demonstrate structure of the present invention, be not the restriction to concrete circuit, in actual track structure, the position of above-mentioned three power transmission lines can be exchanged each other.Tower body 1 wherein and the front side of angle tower 11, rear side are also in an embodiment in order to clearly demonstrate, and are not the concrete restrictions to actual track.
According to the code requirement of transmission line, and the consideration to potential safety hazard, as preferred embodiment, all adopt insulator string 3 to be connected at above-mentioned all power transmission lines, wire jumper with the junction of each cross-arm on tower body 1.So as shown in Figure 1, so just can reduce danger coefficient, be convenient to maintenance and the maintenance of transposition tower.
Claims (4)
1. same-tower dual-loop single-line transposition tower, comprise tower body (1), tower body (1) left and right side is all provided with the upper cross-arm (21) vertical with power transmission line direction, middle cross-arm (22) and lower cross-arm (23), and cross-arm (21), middle cross-arm (22) and lower cross-arm (23) both sides are connected to the first loop and second servo loop transmission line on described;
First loop comprises the first power transmission line A1, the second power transmission line B1 and the 3rd power transmission line C1, and second servo loop comprises the first power transmission line A2, the second power transmission line B2 and the 3rd power transmission line C2;
It is characterized in that,
In the upper and lower part of tower body (1) on front side of power transmission line direction or the wherein side of rear side upper conductor cross-arm (31), lower wire cross-arm (32) are installed, between described upper conductor cross-arm (31) and lower wire cross-arm (32), be connected with upper and lower wire jumper (41);
The leading portion of the first power transmission line A1 is connected on middle cross-arm (22), and is connected with the back segment be connected on upper cross-arm (21) through the first displacement wire jumper (51);
The leading portion of the second power transmission line B1 is connected on lower cross-arm (23), and is connected with the back segment be connected on middle cross-arm (22) through the second displacement wire jumper (52);
The leading portion of the 3rd power transmission line C1 is connected on cross-arm (21), and on the 3rd, conjugates wire jumper (53) be connected with upper and lower wire jumper (41); The back segment of the 3rd power transmission line C1 is connected on lower cross-arm (23), and is connected with upper and lower wire jumper (41) through the 3rd time displacement wire jumper (54).
2. same-tower dual-loop single-line transposition tower as claimed in claim 1, it is characterized in that, described tower body (1) is angle tower (11), upper conductor cross-arm (31) and lower wire cross-arm (32) are arranged on the front side of angle tower (11), and described first loop is connected to the inner side (61) of angle tower (11).
3. same-tower dual-loop single-line transposition tower as claimed in claim 1 or 2, is characterized in that, described 3rd time displacement wire jumper (54) is arranged on lower cross-arm (23) side end by insulator string (3).
4. same-tower dual-loop single-line transposition tower as claimed in claim 1 or 2, is characterized in that, all adopt insulator string (3) to be connected at above-mentioned all power transmission lines, wire jumper with the junction of the cross-arm on tower body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210576497.2A CN103001165B (en) | 2012-12-27 | 2012-12-27 | Same-tower dual-loop single-line transposition tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210576497.2A CN103001165B (en) | 2012-12-27 | 2012-12-27 | Same-tower dual-loop single-line transposition tower |
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| CN103001165A CN103001165A (en) | 2013-03-27 |
| CN103001165B true CN103001165B (en) | 2016-02-03 |
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| CN201210576497.2A Active CN103001165B (en) | 2012-12-27 | 2012-12-27 | Same-tower dual-loop single-line transposition tower |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103001165B (en) * | 2012-12-27 | 2016-02-03 | 四川电力设计咨询有限责任公司 | Same-tower dual-loop single-line transposition tower |
| CN104091032B (en) * | 2014-07-24 | 2017-03-15 | 四川电力设计咨询有限责任公司 | Heavy icing area common-tower double-return road Transmission Line Design method |
| CN104196301B (en) * | 2014-08-06 | 2017-07-14 | 赵晖 | A kind of coordinated transposition tower |
| CN105119228B (en) * | 2015-08-14 | 2017-11-14 | 国家电网公司 | A kind of aerial list of double back overhead transmission line adjusts back connect line bar and wiring construction |
| CN115405149A (en) * | 2022-09-16 | 2022-11-29 | 国网青海省电力公司经济技术研究院 | Double-loop transposition tower for power transmission line |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201868825U (en) * | 2010-11-23 | 2011-06-15 | 中国电力工程顾问集团东北电力设计院 | 500KV double-circuit self-transposition tower |
| CN103001165A (en) * | 2012-12-27 | 2013-03-27 | 四川电力设计咨询有限责任公司 | Same-tower dual-loop single-line transposition tower |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08138470A (en) * | 1994-11-16 | 1996-05-31 | Ngk Insulators Ltd | Application structure for lightning arrester insulator in transmission line |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201868825U (en) * | 2010-11-23 | 2011-06-15 | 中国电力工程顾问集团东北电力设计院 | 500KV double-circuit self-transposition tower |
| CN103001165A (en) * | 2012-12-27 | 2013-03-27 | 四川电力设计咨询有限责任公司 | Same-tower dual-loop single-line transposition tower |
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